Tennis star Naomi Osaka gave a sweet nod to her Japanese culture as she kicked off her return to the U.S. Open with a win in the first round on Tuesday.

Osaka, in her victory over Jeena Ostapenko, rocked an outfit complete with several bows that she sported, including on her bomber jacket, a light green ruffled skirt and on the backs of her shoes.

The four-time Grand Slam champion who is competing in the U.S. Open for the first time since returning from maternity leave told reporters after the first round that the fit was inspired by Japanese culture, including in Tokyos Harajuku district, an area known for its fashion.

I definitely love to be involved in everything I do, whether its fashion or anything else, said Osaka, who teased the fit on social media earlier this month as the best shes ever worn .

She added, But I feel like being able to be a part of my tennis outfits gives me, I would say, a different strength.

The bow-focused look is one of two by Nike that designer Yoon Ahn custom-made for Osaka in the tournament.

I remember one of the first times I went to Japan, I saw so many frills and so many bows, Osaka told The New York Times .

Ahn revealed to the Times that Osaka sent her a number of Lolita goth looks , a style that the designer described as wearing pink, frills, bows, lace and really owning the cutesy-ness and the girly-hood.

The other look designed by Ahn is a black outfit for evening matches at the U.S. Open, whereas her green look is for daytime competition.

Osaka told the Times she wouldnt automatically associate herself with being girlish while playing tennis.

But I tend to gravitate toward really beautiful and cute things, Osaka said.

She continued, I think theres something quite cool in making that an emphasis, especially here in New York. In New York, the tennis court is more like a stage.